Sketches are the second language of animator. This profession requires quick and precise drawings to be made, and every drawing that you've made in studio, while walking, sitting on the bench or even commuting is the drawing that helps you maintain those skills. Experienced animators never go out without a sketchbook or two. Every interesting pose, that you caught on the street, every gesture or scene, that you've captured successfully, will become immediately a building block in your animation career.
Quick sketches create very sophisticated work environment: they time-pressure you (gestures disappear quickly) and at the same time makes you forget about the quality of drawing, so you can concentrate more on the things that matter: story, gesture, action. Live drawings that you make in studio are also helpful: they let you study construction and gestures more thoroughly, but here you can get yourself involved too deeply into the details, so you need to constantly keep yourself concentrated on the message behind the gesture.
That is why you cannot say that regular studio attendance is enough for you. Try to make at least 1-2 pages of quick sketches every day, visit studio twice a week for a longer drawing sessions. Do this for three straight weeks. If you succeeded — congratulations: you just get yourself great visual diary and pretty great boost in your skills, which you can notice while working or drawing. So make this a habit, remember the gestures and push them as far as you can, use them in your animation and don't be shy while drawing in public places.
And you will discover that this process has transformed from the obligation into the adventure.